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Micro filler for water treatment and preparation method thereof

A water treatment and micro technology, applied in water treatment parameter control, biological water/sewage treatment, special compound water treatment, etc., can solve the problem of small specific surface area of ​​immobilized fillers, high installation and transportation costs, increase of biological pool dead zone, etc. problems, to achieve the effect of improving biomass and sedimentation, reducing height, and increasing processing load

Active Publication Date: 2021-12-14
BEIJING DRAINAGE GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the specific surface area of ​​immobilized packing is still small, and the installation and transportation costs are high; there is a service life and poor reusability; at the same time, packing blockage often occurs during operation, which increases the dead zone of the biological pool

Method used

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  • Micro filler for water treatment and preparation method thereof
  • Micro filler for water treatment and preparation method thereof
  • Micro filler for water treatment and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] This embodiment provides a micro-filler for water treatment and a preparation method thereof.

[0036] Powder activated carbon (particle size is 15-40μm, bulk density is about 1.04g / m 3 , the pore volume is about 0.80mL / g, the number of pores is about 1280 / g, and the total micropore surface area is about 800m 2 / g. ), Fe 3 o 4 Solid (particle size 0.1-5.0μm), hydroxylamine hydrochloride solid (particle size 0.01-0.5μm) mixed evenly, Fe 3 o 4 1. The hydroxylamine hydrochloride solid is adsorbed on the powdered activated carbon under the effect of surface energy to obtain the micro-filler S1 for water treatment. Among them, powdered activated carbon, Fe 3 o 4 , The mass ratio of hydroxylamine hydrochloride solid is 1: 0.01: 0.1. The use concentration of S1 is 5-25mg / L. During the use process, the concentration is high in the early stage and low in the later stage. It can be adjusted according to the actual situation.

Embodiment 2

[0038] This embodiment provides a micro-filler for water treatment and a preparation method thereof.

[0039] Graphene oxide (particle size is 15-50μm, bulk density is about 0.89g / m 3 , the pore volume is about 0.775mL / g, the number of pores is about 900 / g, and the surface area of ​​all micropores is about 700m 2 / g. ), Fe 2 o 3 Solid (0.1-5.0μm particle size) and hydrazine sulfate solid (0.01-0.5μm particle size) are evenly mixed, Fe 2 o 3 Solid and hydrazine sulfate solids are adsorbed on graphene oxide under the action of surface energy to obtain micro-filler S2 for water treatment, such as figure 1 shown. Graphene oxide, Fe 2 o 3 The mass ratio of solid and hydrazine sulfate solid is 1:0.02:0.08. The concentration of S2 is 5-15mg / L. During the use, the concentration is high in the early stage and low in the later stage. It can be adjusted according to the actual situation.

Embodiment 3

[0041] This embodiment provides a micro-filler for water treatment and a preparation method thereof.

[0042]Diatomaceous earth (particle size is 15-50μm, its bulk density is about 0.75g / m 3 , the pore volume is about 0.88cm 3 / g, the number of pores is about 1354 / g, and the surface area of ​​all micropores is about 780m 2 / g. ), FeCl 3 Solid (0.1-5.0μm particle size), hydrazine sulfate solid (0.01-0.5μm particle size) uniformly mixed, FeCl 3 The solid and the hydrazine sulfate solid are adsorbed on the diatomite under the effect of surface energy to obtain the micro-filler S3 for water treatment. Diatomaceous earth, FeCl 3 The mass ratio of solid and hydrazine sulfate is 1:0.01:0.1. The use concentration of S3 filler is 5-25mg / L. During the use process, the concentration is high in the early stage and low in the later stage. It can be adjusted according to the actual situation.

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Abstract

The invention belongs to the technical field of biological sewage treatment, and particularly relates to a micro filler for water treatment and a preparation method thereof. The micro filler for water treatment comprises a porous micro filler, a metal-based nano-type chemical material and a nitrogen chemical agent. According to the invention, a porous micro filler with proper specific gravity is selected, and a metal-based nano-type chemical material and a nitrogen chemical agent are attached to the surface of the porous micro filler in a dry powder (or solution) mixing and stirring manner by utilizing the characteristic of large specific surface area of the porous filler. The treatment agent has the main functions that the biomass and settleability of the biological tank can be effectively improved; meanwhile, the retention of denitrifying functional bacteria with a relatively long generation period in a water treatment system is facilitated; the flora structure can be adjusted, and the autotrophic nitrogen removal rate of a water treatment biological system is improved; and finally, energy conservation and consumption reduction of a water reclamation plant are promoted.

Description

technical field [0001] The invention belongs to the technical field of sewage biological treatment, and more specifically relates to a micro-filler for water treatment and a preparation method thereof. Background technique [0002] Activated sludge method is still the most economical sewage treatment method. However, as the amount of sewage increases year by year, the discharge standards of sewage plants continue to increase, and more and more sewage plants are becoming saturated. How to increase the pollutant removal load of biological pools is a major problem facing the sewage treatment industry. Among them, the addition of various types of fixed fillers can retain nitrifying bacteria and other microorganisms with a long generation cycle in the biological pool, which can significantly increase the biomass of the biological pool and thus improve the efficiency of biochemical treatment. However, the specific surface area of ​​immobilized packing is still small, and the inst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00C02F3/34C02F3/30
CPCC02F3/00C02F3/34C02F3/307C02F2003/001C02F2209/16C02F2305/06Y02W10/10
Inventor 李权蒋勇张树军田夏迪谷鹏超曲之明周桐吕心涛刘垚孙冀垆
Owner BEIJING DRAINAGE GRP CO LTD
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