Logiciels Assainissement et Dépollution des Eaux

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The Cabinet MERLIN engineers and technicians use and develop a range of special programs specifically for sewerage and water treatment operations. Two computer packages grouping are used : Market packages well-known in the whole trade (RERAM, CEDRE, CANOE, MOUSE-SAMBA), and program families or calculation sheets develop for macro with excel, suited to CABINET MERLIN, helping to resolve complex problems which require the handling of large quantities of data

Sewerage system modelling package

RERAM

Hydrological modelling hydrogram spreading software. Open or closed branches system networks, through free surface drainage without downstream conditions.

MOUSE-SAMBA

Sewerage systems diagnostic and design tool , this powerful software allows a fine simulation of the upstream changes in complex structure (grid, weir, storage basins, over flows, pumping stations and controlling works).
The additional option SAMBA allows a simulation and a calculation of the pollution discharge in the environment due to a short raining or a series of rains.

CANOE

CANOE draws on CAREDAS package using experience developed by LHF, and on CEDRE package, developed by the INSA at LYON. It is operated by these 2 organisations, in relation with the Agricultural Ministry and 5 French large local Authorities having a large experience in using information technology relating to sewerage system modelling. (LILLE URBAN community, LYON urban community, Department of SEINE SAINT DENIS, Department of VAL DE MARNE, MARSEILLE).

HYDROWORKS

Diagnosis and design tool for sewerage systems, for fine simulation of dynamic propagation, including quality changes.

Soft ware for calculating hydrological characteristics of drainage basins

HYDROB : program library for hydrological characteristics of the urban drainage basins concentrated time

Programs library for hydrological characteristics of urban drainage basins concentrated time, from Caquot, Desbordes and RERAM formula. Calculation program of drainage basin average loss through breakdown of appropriate formula data n° 77-284/INT.

CIR77 Calculation program of rains peak flow with help of the regulation method n°77 - 284/INT

Calculation program for rains peak flow agreed with the regulation method n°77-284/INT and Desbordes for return period of 1 year, 2 years, 5 years and 10 years the regions 1, 2 and 3, from the surface area of drainage basins, waterproof standard coefficient , standard downhill data, and from the hydraulic longest route. raw peak flow calculation to the final discharge of each drainage basin and considering elongation rate, suited peak flow and concentrating time, in association with elementary drainage basins in series or in parallel

KOCH calculation program of capacity coefficient and urban/rural drainage basins active surface areas considering the kind of soil through the suited method KOCH

Calculation method of the average coefficient for urban/rural drainage basin capacity in vegetation gravity through drainage basin breakdown in elementary gravity surface areas referring to homogeneous soil and urbanisation. elementary capacity coefficient are estimated from KOCH scale and standard coefficient calculated from weighting towards elementary surface areas.
This characteristic coefficient allows the impounding reservoir sizing, without more precise data.

Hydraulic calculation software for sewerage works

Hydraulic Gradient hydraulic calculation software for gravity flow into the sewerage system network

Hydraulic calculation software for gravity flow into the system network , in continuous flow. Calculation of hydraulic gradient. Works whith profile changes (smaller or increase) as grid , valve, ...

RESEAUX data base of hydraulic calculation for sewerage systems Pre-sizing tool

Hydraulic calculation program library for sewerage network systems, circular works, support pillar and arch gallery type, culvert with or without flat top, ovoid, symmetrical or not, standard height, flow, speed, critical height calculations. Pre-sizing tool.

OUVRAGES database for hydraulic calculation for works as weir, grid, valve - pre sizing tool

Program library for hydraulic calculation on specific works as weirs, falls, front mounted or lateral weir, grid, valve. Rule calculation for the standard height - flow-speed-capacity loss - and other specific matters. Pre-sizing tool.

CEBELMAIL

Hydraulic knocks calculation, designed by CEMAGREF, France.

Sizing software for impounding reservoirs

BASPLUIE sizing software for impounding reservoir by rain method

Impounding reservoirs sizing software based on rains method using force, duration, frequency adjustment laws. The method consists in the balance between input/output of the basin volumes data in accordance with : Catchement area surface, mean input coefficient, concentration time, rain spatial abatement coefficient, impounded water upstream flow, force and duration considering rate of return periods. The program calculates the rain duration which saturates the reservoir, draining time, total using time of the reservoir.

BASVOL impounding sizing software based on the volumes method

Impounding reservoirs sizing software based on the volumes method recommended by the regulation n° 77-284/INT - abaque ab . Impounding waters calculation from the catchment surface area , the mean input coefficient, the spatial abatement coefficient, impounded water upstream flow, sizing for back flow periods : 2, 4, 10 and 20 years.

REGBAS Rain bas P I D type impounding reservoir upstream

Modelling software for the joints impounding reservoir upstream. The drain valve remote controlled by a computer which calculates a P I D type upstream.

Pre-sizing software for sewerage projects

CUBSURF calculation package for volumes and surfaces areas from al cross wise profiles

Volumes and surfaces areas calculation software for pre sizing from n cross wise of natural grounds and n profiles and made up grounds, volumes and surfaces areas calculation of made up grounds with 20 possibilities profiles to characterise the surfaces using configured profiles. Calculation of impounding volumes defined by crosswise profiles.

CANAM pre-sizing software for pipe laying in trench

Pre-sizing software for pipe or any trench works laying. Earthwork volumes calculation with or without excavation, screening, laying bed, coating, backfill, preparation and refurbishment of the site. Data package configured by a typical cross section of a trench and length profile calculation from homogeneous technical sections.

GALERIM Pre-sizing software for the implementation of tunnels

Pre-sizing software for implementation of tunnels or any underground works with the calculation of earthworks, screenings, Civil Engineering, filling injection, bonding, etc...
Data package configured by gallery type sections with arch, pier, circular works and calculation of homogeneous technical sections.

PROFIL Length and cross wise profiles drawing software

Software which allows drawing of length and cross wise profiles of the works with 4 natural grounds and 4 made up grounds or works to be implemented such as pipe, tunnel, Civil Engineering, general earthworks. Output from A3 or A0 plotters with measurements, length, slopes, comments and presentation.

Software for aided design of wastewater treatment equipment

DISTEP Biological treatment sizing

This tool developed by the Water Treatment department engineers and technicians, makes the sizing of low load activated sludge treatment system easier. Due to iterative calculation it allows to define the reservoir volumes to be achieved, the aeration capacity to be planed, the necessary clarification surface area, the sludge production. On one hand, the calculation is based on the raw water characteristics, and the discharge level required towards nitrogen, phosphorus and on the other hand, on well-tried sizing parameters (kinetics, applied loads, aeration reservoir concentration,...) the calculation result are iterative in order to optimise the sizing efficiency.

DIMPRET Pre treatment works sizing

This tool allows to size the desanding, desoiling and biological greases treatment works as well as the whole electromechanical equipment involved.

PROFILSTEP Hydraulic profile of the water treatment plant calculation

This tool developed by the Water Treatment department engineers and technicians aims to define the optimal altimetric setting of the hydraulic works including the covering buildings.

PANACHE (APC3) dispersion simulation of gaseous pollutants

The software is coming in the regulation documentation framework. these documentation relate to wastewater treatment plant which have sludge incinerated, this tool allows to :

Calculate the concentration of various gaseous or solid pollutants which are contained in atmospheric discharges of sludge incineration devices.(Gaussien 's model of dispersion),
Visualise iso values curves, acceptable concentration thresholds, and riches concentration statistically or instantaneously calculated,
Assess the environment impact from sludge incinerators and fume treatment devices implementation,
Monitor the pollutants iso concentration curves for geographical defined site within a radius of 20 kilometres.

FLUIDYN PANACHE dynamic simulation of pollutants dispersion
CHIVA wastewater treatment plant costing

Computer-aided design of wwtp processes, optimizing costs and performance

It allows a quick sizing of all types of processes, combining different process and equipments, fully compatible with project constraints.

The following results are given :

Investment
- Installation costs
- Equipment costs
- Financing
Operation
- Sludge and by-products elimination
- Energy costs
- Chemical costs
- Refurbishment and maintenance costs

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