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Sewage treatment process

A technology of sewage treatment and process, applied in the direction of water/sewage treatment, biological water/sewage treatment, oxidized water/sewage treatment, etc., can solve the problems of pollution, effluent, waste of water resources, etc., and achieve environmental protection and low cost Effect

Inactive Publication Date: 2019-12-03
HENAN RENHUA BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a sewage treatment process, which has the advantages of good treatment effect, and solves the problem that the sewage treatment method in the prior art is not satisfactory, and even directly discharged, causing serious waste of water resources and environmental pollution. question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] First, the sewage is drained to the primary sedimentation tank, and a coarse grid is installed on the top of the primary sedimentation tank. The coarse grid controls the sludge concentration between 1000mg / l and 1500mg / l, and discharges sludge to the sludge concentration tank three times a week. The sludge is discharged for 30 to 40 minutes each time; then the preliminary filtered sewage flows into the sewage lifting pump well, and the surface of the sewage lifting pump well is equipped with fine grids, which will intercept impurities and large particles in the water, and the fine grid meshes In order to control the sludge concentration between 200mg / l and 400mg / l; then the pretreated sewage flows into the secondary sedimentation tank, and the clarified liquid from the upper part of the secondary sedimentation tank is collected in the sump, and stirred for 30 to 40 minutes, while Add sewage treatment agent while stirring, and add oxidant, coagulant and flocculant to the ...

Embodiment 2

[0024] In embodiment one, add following operation:

[0025] After the sludge in the sludge thickening tank in the step (1) and step (3) is dehydrated, the treated sludge is landfilled, agriculturally used, incinerated or used as biogas fertilizer.

[0026] First, the sewage is drained to the primary sedimentation tank, and a coarse grid is installed on the top of the primary sedimentation tank. The coarse grid controls the sludge concentration between 1000mg / l and 1500mg / l, and discharges sludge to the sludge concentration tank three times a week. The sludge is discharged for 30 to 40 minutes each time; then the preliminary filtered sewage flows into the sewage lifting pump well, and the surface of the sewage lifting pump well is equipped with fine grids, which will intercept impurities and large particles in the water, and the fine grid meshes In order to control the sludge concentration between 200mg / l and 400mg / l; then the pretreated sewage flows into the secondary sediment...

Embodiment 3

[0028] In embodiment two, add following operation:

[0029] The sewage treatment agent used in the step (3) is composed of cationic polyacrylamide, anionic polyacrylamide, nonionic polyacrylamide, zwitterionic polyacrylamide and the like.

[0030] First, the sewage is drained to the primary sedimentation tank, and a coarse grid is installed on the top of the primary sedimentation tank. The coarse grid controls the sludge concentration between 1000mg / l and 1500mg / l, and discharges sludge to the sludge concentration tank three times a week. The sludge is discharged for 30 to 40 minutes each time; then the preliminary filtered sewage flows into the sewage lifting pump well, and the surface of the sewage lifting pump well is equipped with fine grids, which will intercept impurities and large particles in the water, and the fine grid meshes In order to control the sludge concentration between 200mg / l and 400mg / l; then the pretreated sewage flows into the secondary sedimentation tan...

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PUM

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Abstract

The invention discloses a sewage treatment process. The sewage treatment process comprises the following steps that sewage is introduced to a primary sedimentation tank, and a coarse grille is arranged at the top of the primary sedimentation tank, and the coarse grille is used for controlling the sludge concentration to be between 1000 mg / L and 1500 mg / L; sludge is drained three times a week to asludge concentration tank for 30-40 minutes each time; the sewage subjected to preliminary filtering flows into a sewage lift pump well, and a fine grille is arranged on the surface of the sewage liftpump well; the fine grille intercepts impurities and large particulate matter in water, fine grille meshes are configured to be capable of controlling the sludge concentration to be between 200mg / L-400mg / L; and the pre-treated sewage flows into a secondary sedimentation tank. According to the sewage treatment process, the sewage is collected and treated by filtering, sedimentation, biodegradationand disinfection, water quality requirements of drainage or reuse are achieved, impurities and high salinity in the sewage can be effectively separated, so that the sewage is fully recycled, the impact of the sewage on the environment is avoided, zero emission is achieved, benefit is brought to the humanity, the environment is effectively protected, and the cost is relatively low.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a sewage treatment process. Background technique [0002] Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, catering, etc., and it is also increasingly entering the daily life of ordinary people. Domestic sewage treatment is to make sewage reach drainage A certain water body or water quality requirements for reuse, and the process of purifying it can effectively save water and energy and benefit mankind, but the sewage treatment methods in the prior art are not satisfactory, and even directly discharged, causing Serious waste of water resources and environmental pollution. Contents of the invention [0003] The purpose of the present invention is to provide a sewage treatment process, which has the advantages of good treatment effect,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/30
CPCC02F1/001C02F1/441C02F1/50C02F1/52C02F1/56C02F1/72C02F1/78C02F3/02C02F3/10C02F9/00C02F11/12C02F2101/30C02F2301/08
Inventor 王铁柱
Owner HENAN RENHUA BIOTECH CO LTD