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Treatment method and novel composite water purifying agent for purifying low-temperature and low-turbidity water

A technology for water purification and treatment methods, applied in chemical instruments and methods, multi-stage water/sewage treatment, adsorbed water/sewage treatment, etc. Layer, the effect of water purification promotion

Inactive Publication Date: 2015-09-09
叶芳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As for what kind of water purifying agent to use for raw water with low temperature and low turbidity, the current patents are less involved
However, because the low temperature and low turbidity of river water and reservoir water in winter seriously affect people's drinking water safety, the market now needs a composite water purifier that can not only take into account flocculation and sedimentation, but also has the ability to deal with low temperature and low turbidity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A treatment method for purifying raw water, comprising the following technical steps:

[0027] (1) Raw water is pumped from rivers or reservoirs to the water distribution well of the water purification plant for effective water distribution, and then enters the sedimentation tank for sedimentation treatment; at this stage, compound water purifiers are added to remove impurities with low temperature and low turbidity to ensure effective After the compound water purifier is added to the wastewater, mix it evenly and let it stand for 35-45 minutes. The dosage of the compound water purifier is 20-30mg / L water;

[0028] (2) The raw water after precipitation treatment enters the filtration stage to further reduce turbidity and pollutants;

[0029] (3) The subsequent raw water can be subjected to the advanced treatment stage of ozone activated carbon, in order to meet the 106 effluent water quality indicators of the drinking water hygiene standard GB 5749-2006;

[0030] (4) T...

Embodiment 2

[0039] The treatment method of this embodiment is the same as that of Example 1, and the novel composite water purifier used in this embodiment consists of the following components in parts by weight:

[0040] Yellow mud powder: 15, potassium permanganate: 0.8, aluminum ash: 8,

[0041] Zeolite powder: 8, sodium hypochlorite: 3, aluminum chloride: 7,

[0042] Magnesium Oxide: 13, Sodium Carbonate: 11, Calcium Oxide: 10,

[0043] Polyaluminum Ferric Chloride: 2, Activated Silicic Acid: 3.

[0044] In the above technical solution, the composite water purifying agent of the present invention can be used for low-temperature and low-turbidity water treatment, and the dosage is controlled at 20-30 mg / L.

[0045] The above-mentioned effluent from the sump after the reaction of the composite water purifying agent was taken to measure the turbidity, and the following results were obtained: the turbidity removal rate was greater than 80%.

Embodiment 3

[0047] The treatment method of this embodiment is the same as that of Example 1, and the novel composite water purifier used in this embodiment consists of the following components in parts by weight:

[0048] Yellow mud powder: 20, potassium permanganate: 1, aluminum ash: 10,

[0049] Zeolite Powder: 10, Sodium Hypochlorite: 5, Aluminum Chloride: 8,

[0050] Magnesium Oxide: 15, Sodium Carbonate: 12, Calcium Oxide: 15,

[0051] Polyaluminum Ferric Chloride: 3, Activated Silicic Acid: 5.

[0052] In the above technical solution, the composite water purifying agent of the present invention can be used for low-temperature and low-turbidity water treatment, and the dosage is controlled at 20-30 mg / L.

[0053] The effluent from the above-mentioned sump after being reacted by the composite water purifying agent was taken to measure the turbidity, and the following result was obtained: the turbidity removal rate was greater than 70%.

[0054] In the above examples, the preparatio...

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Abstract

The invention discloses a treatment method and a novel composite water purifying agent for purifying low-temperature and low-turbidity water. The treatment method includes steps of (1), effectively distributing raw water which is delivered from rivers or reservoirs to water distributing wells of water purification plants by pumps, then feeding the raw water into sedimentation tanks to carry out sedimentation treatment on the raw water, adding 20-30mg of the composite water purifying agent into each 1L of waste water at stages, removing low-temperature and low-turbidity impurities by the composite water purifying agent to guarantee effective removal results, then uniformly mixing the composite water purifying agent with the waste water, and allowing the waste water to stand still for 35-45min; (2), further reducing the turbidity of the raw water and pollutants in the raw water at filtering stages after sedimentation treatment is carried out on the raw water; (3), carrying out advanced treatment stages on the raw water by the aid of ozone and activated carbon to expectedly meet 106 outlet water quality indexes of drinking water sanitation standards GB 5749-2006; (4), dewatering sludge, generated at the various stages, in a concentrated manner and then allowing the sludge to be conveyed to landfill.

Description

technical field [0001] The invention relates to the technical field of water purifying agents for water treatment, in particular to a treatment method for purifying low-temperature and low-turbidity water and a composite water purifying agent. Background technique [0002] The water temperature of many rivers in our country is only 0-1°C in winter, and the water temperature in the lower layer of the reservoir is 2-4°C. Raw water turbidity is also very low during this period, the river water is 5-30NTU, and the reservoir water is only 5-10NTU. The raw water temperature is low, and the dynamic viscosity coefficient of water is increased, which weakens the particle movement of the colloids in the water and reduces the probability of their collision with each other; the solvation of the colloids in the water is enhanced, and the hydration film around the particles is thickened, which hinders the coagulation of the particles; At the same time, the flocs formed by coagulation are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/28C02F9/04
Inventor 叶芳
Owner 叶芳
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