PATENT CLAIM ANALYSIS

Application Number: 15958986
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-10
Patent Classification: ["210", "639000"]

Abstract:
The present invention relates to the waste water treatment field, and discloses apparatus and method for treating waste water containing ammonium salts, which contains NH 4 + , SO 4 2− , Cl − , and Na + . In the method of the present invention, the pH value of the waste water to be treated is adjusted to a specific range in advance; sodium sulfate crystal and relatively concentrated ammonia are obtained by first evaporation, and then sodium chloride crystal and relatively dilute ammonia is obtained by second evaporation; alternatively, sodium chloride crystal and relatively concentrated ammonia is obtained by third evaporation, and then sodium sulfate crystal and relatively dilute ammonia are obtained by fourth evaporation. The method of the present invention can recover ammonia, sodium sulfate, and sodium chloride from the waste water respectively, so that the resources in the waste water can be reused as far as possible.

Claim (Index 1):
A waste water treatment apparatus for treating waste water containing ammonium salts, comprising: a pH adjustment unit, a first evaporation unit, a first solid-liquid separation unit, a second evaporation unit, and a second solid-liquid separation unit, which are connected sequentially, wherein the pH adjustment unit is configured to adjust the pH of the waste water before evaporation is performed;\n the first evaporation unit is configured to treat the waste water by first evaporation, to obtain first ammonia-containing vapor and first crystal-containing concentrated solution; the first solid-liquid separation unit is configured to treat the first crystal-containing concentrated solution by first solid-liquid separation; the second evaporation unit is configured to treat the liquid phase obtained in the first solid-liquid separation unit by second evaporation, to obtain second ammonia-containing vapor and second crystal-containing concentrated solution; and the second solid-liquid separation unit is configured to treat the second crystal-containing concentrated solution by second solid-liquid separation.

Metadata:
- Claim Count in Document: 62.0
- Percentile: 91.0
- Lexical Diversity: 2.21622
- Patent Class: 210.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15807252', '16060446', '10346896', '13876445', '14083200']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8156469982955638
- 35 USC 102 Novelty (BERT): 0.5066534375009407
- Combined Prediction Score: 0.7847476422161015
- Mean Citation Score: 263.593112
- Max Citation Score: 304.83612
- Similarity Product: 241.1249738041592

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test