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 19):
The method according to  claim 18 , wherein the waste water to be treated is the waste water containing ammonium salts; or the waste water to be treated contains the waste water containing ammonium salts and the liquid phase obtained in the fourth solid-liquid separation;\n preferably, in relation to 1 mol SO 4 2\u2212  contained in the waste water to be treated, the Cl \u2212  contained in the waste water to be treated is 9.5 mol or more; preferably, in relation to 1 mol SO 4 2\u2212  contained in the waste water to be treated, the Cl \u2212  contained in the waste water to be treated is 10 mol or more; preferably, the pH of the waste water to be treated is adjusted to a value greater than 10.8, before the waste water to be treated is treated by the third evaporation; preferably, the pH of the waste water to be treated is adjusted with NaOH.

Metadata:
- Claim Count in Document: 62.0
- Percentile: 91.0
- Lexical Diversity: 2.21622
- Patent Class: 210.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15807252', '16060446', '10346896', '13876445', '14083200']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8322747641443913
- 35 USC 102 Novelty (BERT): 0.5166234937131905
- Combined Prediction Score: 0.8007096371012713
- Mean Citation Score: 263.593112
- Max Citation Score: 304.83612
- Similarity Product: 196.21116493779653

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test