Domestic wastewater treatment method

A technology for domestic wastewater and treatment methods, applied in multi-stage water treatment, water/sewage treatment, special compound water treatment, etc., can solve the problems of large changes in water quality, high toxicity, complex components, etc. Strong adsorption capacity, good absorption effect

Inactive Publication Date: 2018-08-31
苏州纳贝通环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, industrial wastewater accounts for more than 70% of the total sewage volume, and is mainly refractory organic wastewater. Due to its large discharge volume, complex components, large water quality changes, high toxicity, difficult biochemical degradation, and difficult treatment, it has caused disasters to the environment. Sexual destruction poses a serious threat to people's lives and restricts the sustainable development of society and economy

Method used

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  • Domestic wastewater treatment method

Examples

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Embodiment 1

[0019] A method for treating domestic wastewater, comprising the steps of:

[0020] S1. Filter domestic wastewater to remove large particles, and then add 6wt% sodium polyacrylate, 2.4wt% polyepoxysuccinic acid, 1.2wt% sodium lignosulfonate and 5wt% solid biological Activated carbon, first stir for 60 minutes, then use microwave heating, the temperature is 25 ° C, microwave radiation for 5 minutes, the power is 700W, and the preparation method of solid biological activated carbon is to accurately weigh the coke with a particle size of 100 mesh, and then mix the KOH solution with the coke , under nitrogen protection, at 5°C·min -1 The heating rate was increased to 500°C, and kept for 60 min, and then continued to heat up to 750°C activation temperature for 2 hours, and then the product was taken out after cooling down to 200°C, and 1 mol L -1 After soaking in hydrochloric acid for 1 h, then fully wash with water until neutral, dry the washed product to obtain modified coke, mi...

Embodiment 2

[0025] A method for treating domestic wastewater, comprising the steps of:

[0026] S1. Filter domestic wastewater to remove large particles, and then add 2wt% sodium polyacrylate, 7.5wt% polyepoxysuccinic acid, 4.5wt% sodium lignosulfonate and 12wt% solid biological Activated carbon, first stir for 90 minutes, then use microwave heating, the temperature is 45 ° C, microwave radiation for 20 minutes, the power is 300W, and the preparation method of solid biological activated carbon is to accurately weigh the coke with a particle size of 100 mesh, and then mix the KOH solution with the coke , under nitrogen protection, at 5°C·min -1 The heating rate was increased to 500°C, and kept for 60 min, and then continued to heat up to 850°C activation temperature for 1 hour, then cooled to 200°C, the product was taken out, and 1 mol L -1 After soaking in hydrochloric acid for 1 h, then fully wash with water until neutral, dry the washed product to obtain modified coke, mix the modified...

Embodiment 3

[0031] A method for treating domestic wastewater, comprising the steps of:

[0032] S1. Filter domestic wastewater to remove large particles, and then add 3wt% sodium polyacrylate, 6.5wt% polyepoxysuccinic acid, 3.5wt% sodium lignosulfonate and 7wt% solid biological Activated carbon, first stir for 70 minutes, then use microwave heating, the temperature is 40 ° C, microwave radiation for 8 minutes, the power is 600W, and the preparation method of solid biological activated carbon is to accurately weigh the coke with a particle size of 100 mesh, and then mix the KOH solution with the coke , under nitrogen protection, at 5°C·min -1 The heating rate was increased to 500°C, and kept for 60 min, and then continued to heat up to 780°C activation temperature for 1 hour, and then cooled to 200°C, the product was taken out, and the product was washed with 1 mol L -1 After soaking in hydrochloric acid for 1 h, then fully wash with water until neutral, dry the washed product to obtain m...

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Abstract

The invention provides a domestic wastewater treatment method. The method includes the following steps of S1, filtering domestic wastewater to remove large-grained impurities, and adding sodium polyacrylate, polyepoxysuccinic acid, sodium lignin sulfonate and solid biological activated carbon to the filtered wastewater to be stirred and then heated by microwaves; S2, adding a Fenton reagent for oxidization degradation after adjusting pH to be 6-9; S3, adding a modified composite flocculant to the wastewater; S4, making the wastewater processed in the step S5 to pass through a composite filtering layer at the flowing speed of 1.4-6.0 m / min, wherein the composite filtering layer is of a three-layer structure, the upper layer and the lower layer of the composite filtering layer are carbonizedmicron wood wool layers, and the middle layer of the composite filtering layer is made of micro-nano activated wood powder. The domestic wastewater treatment method has great wastewater treatment capacity.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a domestic wastewater treatment method. Background technique [0002] Water is the source of life, the basic prerequisite for human survival, and the basic guarantee for sustainable economic development. Although the total amount of water resources in China ranks sixth in the world, the per capita water consumption is about 1 / 4 of the world's per capita water volume, ranking only 110th in the world. Water resources are very scarce and water disasters are frequent. It has been listed by the United Nations as a One of 13 water-poor countries. However, with the rapid economic growth, the rapid development of modern industry and the continuous growth of population, the discharge of domestic sewage and industrial wastewater has increased significantly, and human beings are facing the severe test of water pollution. Among them, industrial wastewater accounts for more than 70% of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F1/52C02F1/54C02F1/56C02F1/28B01J20/20B01J20/28B01J20/30
CPCB01J20/20B01J20/28004C02F1/001C02F1/283C02F1/5236C02F1/54C02F1/56C02F1/66C02F1/722C02F9/00C02F2301/08C02F2305/026
Inventor 潘明华
Owner 苏州纳贝通环境科技有限公司
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