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Treatment system and treatment method for amino resin production wastewater

A technology for treatment system and production wastewater, applied in biological water/sewage treatment, multi-stage water treatment, water/sewage treatment and other directions, which can solve the problems of turbidity of surface water, unreasonable ratio of Fenton reagent, and toxicity of biochemical system.

Pending Publication Date: 2019-12-13
上海玉畔环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a treatment system and treatment method for waste water produced by amino resin, to solve the problems in the prior art of using strong acid to adjust PH, unreasonable proportion of Fenton's reagent, turbid water floating on sludge, and residual hydrogen peroxide on biochemical System poisoning and other issues

Method used

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  • Treatment system and treatment method for amino resin production wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Adopt the treatment device of amino resin production waste water of the present invention to carry out the method for waste water treatment as follows:

[0037] (1) Amino resin production wastewater enters the wastewater regulating pool 1 after being collected. When the water level of the wastewater regulating pool 1 reaches a high level, the wastewater lifting pump 2 is automatically started by the high level floating ball control, and the The waste water is delivered to the Fenton oxidizer 3;

[0038] (2) Configure a ferrous sulfate solution with a concentration of 10%, and add it to the Fenton oxidizer 3 in an amount of 5L per ton of waste water. Since the ferrous sulfate solution is acidic, the pH value of the waste water will change from the original value after the addition. 6~7 is reduced to 5~6; then 5L of 27.5% hydrogen peroxide is added to each ton of wastewater, the acidification reaction starts, the pH value of the wastewater continues to drop, and finally s...

Embodiment 2

[0046] All the other processes are the same as in Example 1.

[0047] The biological bacteria (activated sludge) in the MBR pool 15 flows back into the anoxic pool 13; through the stirring of the submersible mixer 17, the activated sludge and the H 2 o 2 The fresh wastewater entering the digester 6 is mixed, and the carbon source of the wastewater itself is used to carry out denitrification and denitrification reaction, and the biological treatment is carried out again.

[0048] Air is introduced into the biological contact oxidation tank 14 and the MBR tank 15 respectively by the air blower 18 through the aeration pipe 21, to provide oxygen and stirring for the activated sludge in the tank, and to provide the nitrifying bacteria in the waste water with the needs of nitrification reaction. of oxygen.

[0049] Sodium hypochlorite can also be added from the top of the MBR pool 15 to further purify the water quality.

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Abstract

The invention provides a treatment system for amino resin production wastewater. The system mainly comprises a wastewater regulating tank connected to a workshop wastewater drainage pipe, and a lift pump is arranged at the bottom of the wastewater regulating tank; a Fenton oxidizer is connected to the lift pump; a PH regulating tank is connected to the Fenton oxidizer; a flocculation pool is connected to the PH regulating tank; an air flotation machine is connected to the flocculation pool; a sludge barrel is connected to a slag discharging port of the air flotation machine; a filter press isconnected to the sludge barrel; a water outlet of the filter press is connected to the wastewater regulating tank again; the air flotation machine is connected to an H2O2 digester; the H2O2 digester is connected to an anoxic tank; the anoxic tank is communicated with a biological contact oxidation tank; the biological contact oxidation tank is communicated with an MBR tank; and a suction pump is arranged outside the MBR tank and is connected to a water tank. According to the invention, Fenton oxidation and air floatation method are combined, and the H2O2 digester, an A / O system and a membrane-bioreactor for reinforcing the biochemical action are adopted for coordination to ensure that the effluent water can reach the national direct discharge standard.

Description

technical field [0001] The invention belongs to the field of organic wastewater treatment, and in particular relates to a treatment system and a treatment method for amino resin production wastewater. Background technique [0002] Amino resin is a general term for resins formed by polycondensation of amino-containing compounds such as urea, melamine or benzomelamine with formaldehyde and alcohols. Important resins include urea-formaldehyde resin (UF), melamine-formaldehyde resin (MF) and polyamide polyamide Amine epichlorohydrin (PAE), etc. During the production process, there will be a certain amount of wastewater generated in the steps of product water separation, distillation dehydration, water washing, vacuum pump drainage, reaction kettle and pipeline cleaning, and floor flushing. The chemical components of the main pollutants in wastewater are formaldehyde, methanol, amino compounds, hydroxymethyl derivative oligomers, low molecular weight resins, etc., mainly manifes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F11/122C02F101/34C02F103/38
CPCC02F9/00C02F11/122C02F2103/38C02F1/66C02F1/725C02F1/722C02F2305/026C02F1/56C02F1/24C02F2101/34C02F3/02C02F3/1268C02F3/30C02F2301/08
Inventor 杨如清
Owner 上海玉畔环保科技有限公司